I will send bulk SMS & OTP via a simple REST API — global delivery, 99% uptime

Send bulk SMS campaigns and time-critical OTP codes through one clean REST API — global carrier reach, sub-second OTP delivery, and a 99% uptime target you can actually build on.

What you get

A production-ready SMS sending layer you call over HTTPS, no carrier contracts or telco paperwork required. You get:

• A single REST endpoint for both bulk/broadcast SMS and one-off transactional OTP messages — same auth, same payload shape, predictable JSON responses.
• Bearer-token authentication with per-key scoping, so you can separate a staging key from production and revoke either without downtime.
• Bulk send in one request: pass an array of recipients (or a single number) and an optional per-recipient merge field for names, codes, or links.
• OTP-optimized routing that prioritizes transactional traffic over marketing traffic, so verification codes land in seconds rather than queuing behind a campaign blast.
• Global delivery across 190+ countries via tier-1 carrier routes, with automatic least-cost/most-reliable route selection per destination.
• Delivery receipts (DLRs) pushed to your webhook — queued, sent, delivered, failed, undeliverable — each with a carrier reason code so you can retry intelligently.
• Sender ID support where the destination country allows it (alphanumeric sender names, shortcodes, or a long virtual number), plus sensible fallbacks where it doesn't.
• Unicode + GSM-7 handling with automatic segmentation and accurate part counting, so emoji and non-Latin scripts send correctly.
• Idempotency keys to safely retry a request without double-sending — essential for OTP flows behind flaky mobile networks.
• Rate limiting and queueing built in, so a sudden 50k-message broadcast won't get you throttled or dropped.
• A simple dashboard for live delivery stats, per-message logs, and webhook event replay.

You also receive copy-paste examples in curl, Node, Python, and PHP, plus a Postman collection so your first message goes out in minutes.

Plans

Feature	Starter	Growth	Scale
Bulk SMS sending	Included	Included	Included
OTP / transactional routing	Included	Priority lane	Dedicated priority lane
Monthly message volume	Light	Medium	High / custom
Sending throughput	Standard	Elevated	Burst-optimized
Delivery receipt webhooks	✓	✓	✓
Sender ID / alphanumeric (where supported)	Shared	Custom	Custom + reserved
Country coverage	Global	Global	Global + route tuning
Idempotency & retry logic	✓	✓	✓
Support	Email	Priority email	Priority + onboarding call
Uptime target	99%	99%	99%

How it works

1. Place your order and tell me your expected volume, the countries you send to, and whether your traffic is mostly OTP, bulk, or both.
2. Receive your credentials — an API base URL and a scoped bearer token for staging and production.
3. Send a test message using the provided curl snippet to confirm delivery to your own number end to end.
4. Wire up your webhook so delivery receipts flow back into your app; I'll help you validate the event signatures.
5. Go live — switch to your production key, set your sender ID where applicable, and start sending bulk or OTP traffic.
6. Monitor delivery rates in the dashboard and reach out anytime a route or country needs tuning.

Why choose this

• One API for two jobs. Most providers make you bolt together separate products for marketing blasts and verification codes. Here, bulk and OTP share one integration with smart routing underneath.
• OTP arrives fast. Transactional traffic rides a priority lane, so sign-in and verification codes don't sit behind campaign queues.
• Honest reliability. A 99% uptime target, real delivery receipts with carrier reason codes, and idempotency so retries never double-charge your users with duplicate texts.
• Genuinely simple. Predictable JSON, clear errors, and ready-made snippets mean a working integration in an afternoon, not a sprint.
• Global without the contracts. Reach 190+ countries through tier-1 routes without negotiating with carriers yourself.

Who it's for / use cases

• SaaS founders adding phone verification or 2FA at signup and login.
• Fintech and crypto apps that need OTP codes delivered reliably for withdrawals and account changes.
• E-commerce stores sending order confirmations, shipping updates, and abandoned-cart nudges.
• Healthcare and booking platforms sending appointment reminders to cut no-shows.
• Growth teams running promotional broadcasts to opted-in subscriber lists.
• Developers who want to ship an SMS feature today without learning telco plumbing.

FAQ

Q: Can I send both marketing blasts and OTP codes with one key? Yes — the same endpoint handles bulk and transactional traffic, and OTP messages are routed on a priority lane automatically.
Q: How fast do OTP messages arrive? Transactional codes are typically delivered within seconds, subject to the destination carrier and network conditions.
Q: Which countries are supported? 190+ countries via tier-1 carrier routes, with automatic per-destination route selection for reliability.
Q: How do I know if a message was delivered? Delivery receipts are pushed to your webhook with statuses like delivered, failed, or undeliverable, each carrying a carrier reason code.
Q: Can I use a custom sender name or shortcode? Yes, alphanumeric sender IDs, shortcodes, and long numbers are supported where the destination country's regulations allow, with automatic fallback elsewhere.
Q: Will retries cause duplicate texts? No — send an idempotency key with each request and a retried call will never send the same message twice.
Q: What languages and SDKs are supported? Any language that can make an HTTPS request; you'll get copy-paste examples for curl, Node, Python, and PHP plus a Postman collection.
Q: How is throughput handled during a large broadcast? Built-in queueing and rate limiting absorb bursts, so a sudden high-volume send is paced rather than dropped.